Fixed ball valve, a new generation of high-performance ball valve for long-distance pipelines and general industrial pipelines, its strength, safety, resistance to harsh environments and other special considerations in the design, suitable for a variety of corrosive and non-corrosive media . It is compared with the floating ball valve, work, the valve fluid pressure on the front of the ball all the force generated by the transmission to the bearings will not move the ball to the seat, so the seat will not withstand excessive pressure, so the fixed ball valve Small torque, small deformation of the valve seat, stable sealing performance, long service life, suitable for high pressure, large diameter occasions. Advanced spring pre-seat assembly with self-tightening features for upstream sealing. Each valve has two seats, each direction can be sealed, so there is no flow restrictions installation is two-way. This valve is normally installed horizontally. Fixed ball valve has two types and three types of valve body structure, the flange with bolts, sealed with PTFE reinforced inlaid stainless steel ring, the back of the ring spring does not guarantee the seat close to the ball, keep seal. No upper and lower stem PTFE bearings to reduce friction, the operation of labor-saving, no adjustment at the bottom of the small shaft to ensure that the ball and seal the junction location. Full diameter: valve flow aperture and pipeline diameter, in order to clean the pipeline. Fixed ball valve for medium: water, gas, oil, natural gas and acid-base corrosive media. Suitable temperature: -196 ~ 350 ℃, drive mode: manual, worm gear, pneumatic, electric, hydraulic and so on. Fixed ball valve features 1, the operation of labor-saving: the ball from the upper and lower bearing support to reduce friction, eliminating the import pressure to promote the formation of a large sealed ball seat and the resulting heavy load caused by excessive torque. 2, the sealing performance is reliable: PTFE single-material sealing ring embedded in the stainless steel valve seat, the metal valve seat with a spring to ensure that the end of the seal enough pre-tightening force, the valve sealing surface wear during use, under the spring Valves continue to ensure good sealing performance. 3, the fire structure: In order to prevent the emergence of sudden heat or fire, teflon seal ring burned, a larger leak, and to promote the fire, the ball and valve seat set between the fire seal ring, the seal burned, In the spring force, the valve seat ring quickly push the ball, the formation of metal and metal seals, play a certain degree of sealing effect. Fire test in line with APl6FA and APl607 standards. 4, automatic relief function: When the medium valve chamber stagnant abnormal increase in pressure over the spring pre] force, the seat back from the ball, to achieve the effect of automatic relief pressure relief valve seat automatically complex 5, the drain pipe Road: the body is set up excretory larvae L, can check the valve seat for leaks, in the work, the valve is fully open or fully closed, the removal of the cavity pressure can be directly replaced filler; can discharge cavity retentate, Reduce the media on the valve pollution. Fixed ball valve is widely used in food, medicine, petroleum, chemical, natural gas, steel, environmental protection, paper and other transmission pipeline media cut off or circulation. This device can also be injected with the appropriate cleaning agent or lubricant to clean the sealing surface.
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